A grease conducting device, the inlet of which has the form of a lubrication fitting, to receive the nozzle of a COUPLING, GREASE GUN. The outlet end may have the form of a nozzle for engaging a FITTING, LUBRICATION, or it may be threaded for the attachment of such a nozzle. When complete with nozzle it serves to connect a grease gun coupling to a lubrication fitting of a different type, or adapts the coupling to a fitting which is otherwise inaccessible.